Please also see this post icw passing parameters, icw providing a method for parsiong the parameters into variables before sending them to the web service. The current implementation is only useful for developers, not end users of the product. As such I cannot implement Mattermost is our environment. I.e. Having chat channels is not sufficient justification for using the product, i need to be able to implement existing tests/checks and feedback results to mattermost from existing webservices and web based reports.